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(No Model.) 3 Sheets-Sheet 1. E. W. BLAOKHALL & R. ANDERSON. DEVICE FOR- GUMMING ENVELOPE-S.

Patented Dec. 31, 1889.

a. M WW6 (No Model.) 3 Sheets-Sheet 2.

E. W. BLAOKHALL & R. ANDERSON. DEVICE FOR GUMMING ENVELOPES.

No. 418,348. Patented Dec. 31, 1889..

N, PETERS, Photo-Likhngnpher, wunln mn, 0.0

3 Sheets-Sheet 3. E. W. BLAOKHALL & R. ANDERSON.

(No Model.)

DEVICE FOR GUMMI'NG ENVELOPES.,

No. 418,348. Patented Dec. 31, 1889.

ATM

Mm W UNITED STATES PATENT OFFICE.

EDWARD w. BLAOKHALL AND ROBERT ANDERSON, or TORONTO, ONTARIO,

- CANADA.

DEVICE FOR GUMMING ENVELOPES.

SPECIFICATION forming part of Letters Patent No. 418,348, dated December 31, 1889.

Application filed October 11, 1888. Serial No. 287,786. (No model.)

To all whom it may concern: Referring to the parts of the device, A is a Be it known that we, EDWARD NV. BLAOK- frame carrying the gumming device, and B a HALLand ROBERT ANDERSON, of Toronto, in horizontal rocking shaft resting in bearings the county of York, Ontario, Canada, have in- G in the frame holding the lifting-arm 1D. 5 Vented a new and useful Improvement in De- E is the holder for the gum, sustained bya vices for Gumniing Envelopes, which imbifurcated bracket or holder F, fitted to turn provement is fully set forth in the following freely upon the shaft B to allow the holder r specification, and shown in the accompanyfor the gum to move upward or downward.

ing drawings. G is a table or head for holding the pile of to. Our invention relates to devices for snpblanks H to be formed into envelopes, said plying or feeding gum or an adhesive subtable being urged upward by some simple or stance to sheets of paper to be folded and common meansas, for instance, arack cand stuck togethersuch as, for instance, paper pinion a, operated by a weight b and conbags or similar articles of manufacturethe nectingcable. 6 [5 invention being herein shown and described, I are the conveyers for the gummed blanks,

however, as being applied particularly to the substantially of common kind and movemanufacture of envelopes. ment, save as to certain novel attachments,

The object of our invention is mainly to hereinafter described. simplify and cheapen the construction of K is an arm secured to the shaft 13, by 20 the parts of envelope-machines as compared which the latter is rocked by any common with those in common use, the functions of means known in mechanics. which parts being to supply the gum to the L L are stops or guides for the pile of blanks, and thus to enable the machines to blanks in common use. 7 be run more rapidly. The holder E for the gum is formed with a 25 Our object is also to produce other imnarrowed part d at its under side, terminatprovements, all of which are hereinafter fully ing in a narrow discharge-opening 6, having described, and more particularly pointed out parallel sides, through which the gum flows in the claims. to the upper blank f of the pile, upon which Referring to the drawings, Figure 1 is a blank the holder E rests. The opening 8 is 0 plan view of our improved device for an encurved to correspond to the contour of the velOpe-machine, parts being broken away; edge g of the sealing-flap of the blank, (see Fig. 2, an end elevation of the same, seen Figs. land 7,) the opening being one-tenth as indicated by arrow as in Fig. 1, parts beof an inch in width, more or less. ing broken away and other parts shown in Now, it will be understood that if the 5 two positions by full and dotted lines; Fig. holder for the gum rests upon the blank, 50 3, a view of the parts, seen in the same dithat the opening 6 corresponds with the dotted rection in which Fig. 2 is seen, the gumlines h, and if then the blank be drawn in dish and other parts being sectioned, as on the direction indicated by the arrow in Fig. the dotted line 3 in Fig. 1; Fig; l, drawn to 7, from under the holder by the conveyors I 40 a larger scale, a View of the under side of I, the whole of the surface 7) of the blank bethe gum dish or holder, the latter being intween-the lines h and the edge g thereof will verted, parts being shown in two positions by passunder the opening and receive gum upon full and dotted lines. Fig. 5 shows a plan of it; and, further, that when the blank is. thus parts of the conveyors, seen as in Fig. 1 and drawn away the gum-holder will similarly rest 5 5 Fig. 6, a side elevation of the one nearer the upon the next blank beneath, the pileH beobserver, seen as indicated by arrow z in ing carried upward, as herein-above. men- Fig. 5. Fig. 7 shows a portion of a blank, tioned, at each operation to the amount of the drawn to a smaller scale, upon which is shown thickness of the blank removed. in dotted lines the form and position of the One side 76, Figs. 2 and 3, of the discharge- 50 line of contact between the edge of the gumopening 6 is made separate from the other mer and blank. side 5, and joined to the latter by pivot-pins I, so that the opening may be varied in width or closed altogether. To the side is connected bya movable joint m, an arm or closer 0 for the opening, the part 0 being also joined by a movable joint 19 to a holder 1", secured to the frame A by pivot-screws t 25. It will be observed that the vertical motions of the holder E for the gum are made from the axis of the shaft B, while the motions of the side it are controlled by the arm 0, moving from the center 27. Now, the axes of B and 13 being eccentric, the wall it will be drawn away from the opposing side 8 when the gum-holder is raised, and pushed toward and against said side 3 when the said holder is lowered. The holder 1 may be turned on its axis to bring the joint '1) toward or from the part 70, which will cause the opening 6 to be closed earlier or later in the downward motion of the holder for the gum. When the pile of blanks is exhausted and the table lowered to receive a new supply, the gum-holder will fall from its own weight, causing the closer 0 to crowd the side 70 against the side 8 and effectually close the opening 6; and this action of the parts also constitutes a stop for the further descent of the gum-holder. Provision is also made for closing the opening 6, by hand, should necessity require. A lip u projects horizontally from the side 7t, and a wedge 11 is pivoted at ct to the'bottom of the holder E for the gum in position to be crowded between the said lip and holder E. A part or handle 1), proj ecting from the wedge, assists the operator to work the wedge, which latter acts to press the side 70 against the side 8 at their lower or meeting edges and close the opening.

The gum dish or holder E is connected with the bracket F, so as to be adjusted toward or from the shaft B and to be adjusted as to its inclination or be tilted, and also to swing in substantially a vertical plane upon a horizontal axis. The forward or back adj ustment determines the width of the band of gum deposited upon the blank. The tilting of the dish causes the sides 70 and s to press relatively more or less heavily upon the blank, and the swinging motion admits of the parts It and s adjusting themselves to bear upon the blank at both ends alike, so that the gum may be communicated to the blank alike at both ends of the dischargeopening. To effect these adjustments and the swinging motion, we provide a sleeve 0', fitted in the circular cavity (1 in the part F, fixed when in position by a set-screw cl.

f is a T-shaped piece, formed with a stem 6, held to turn in the sleeve, the stem being headed at its inner end to prevent it from pulling out of the sleeve. The T or holder f is secured to the dish E by screws g g,

passing freely through the piece f, and h h are tilting" or adjusting screws threaded in the piece f near its upper edge, which tiltingsorews, bearing at their points againstthe side of the gum-holder, tend to push the latter away from the piece f. By loosening the screws g g and tightening the screws 77. h the gum-holder will be turned toward the left, (see Fig. 3,) causing the part 8 to bear more heavily upon the blank. .By loosening the screws h h and tightening the screws g g the part 70 will be caused to bear more heavily upon the blank. When the part .5 bears upon the blank, less gum will be left thereon, as the gum will be more cleanly scraped offthe blank by said part when the former is pulled from the gum-holder. When, by adj ustingthe position of the gum-holder, the side 10 sustains the weight of the holder, more gum is allowed to escape under the side 5 and remain upon the blank.

The arm D is secured to the shaft by a setscrew 72, by which it may be adjusted as to the matter of its meeting the blank. This arm carries at its outer free end a gummed surface or gummer i, for the double purpose of supplying gum to the outer edge 70 of the blank and to enable it to lift the edge of the blank from the pile for the purpose of being caught by seizers. The part i may be a mass of fine wire-gauze or a fibrous material or other body having interstices in which to receive and hold the liquid gum. When the arm is brought down upon the blank and then raised, the blank will be both supplied with gum and lifted to be caught by the conveyers. A stripper Z clears the arm of the blank, while the dead-weight of the heavy gum-holder serves to hold the blank securely in place until forced from under it by the seizing-conveyers.

The seizers shown in Figs. 5 and 6 are attached to the conveyers or bars I I. These seizers consist of spring-snaps 'n, pivoted to the barsI I, respectively, each being urged by a spring t. The forward ends rof the seizers are provided with friction-pads 0', of in dia-rubber, felt, or similar material, to cause the seizers to hold more firmly to the blanks. Similar pads 0 are provided for the bars I I to meet the pads of theseizers. p'is a prop or detent for the snap. extending through a slot 7" in the latter and formed with a shoulder at s to resist thejfaotion of the spring. When the conveyers are moved to the left, the end of each snap is brought under a depressor u, fixed in a rigid part N of the machine, which opens the snap and allows the detent p to have its shoulder s urged under the snap by a slender spring a The snaps are then in readiness to seize the blank. A forward movement of the conveyers brings the respective detcnts against rigid trips b Figs. 1 and 2, which release the snaps to allow them to seize the blank and pull it from the gumdish, as stated.

One of the conveyers is provided with a support 0 to prevent the sagging of the blank as it is being carried to the former. This support is preferably a slender wire or strip of metal reaching in under the middle of the blank, and there may be one extending from each of the conveyers I I.

ITO

The fact that the holder for the gum rests upon the blanks is of itself of much importance, for it thus not only holds the pile of blanks in place, but each separate blank, as it comes to the top of the pile, is held steadily at one edge, while the lifter raises the other edge and delivers it truly to the seizers.

The firm grasp of the seizers not only enables them to pull the blanks from the gumholder, but on account of it theyare enabled to carry the blanks with positive action, thus insuring their accurate delivery to the former, so as to receive an even fold.

We incline the table G, as shown in Fig. 2, so that the surface of the blank will be squarely met by the gumming-arm D as the latter moves down on the curve of a circle, and also to give the points of the conveyers a better chance to pass in under the raised blank without encountering the edge of the blank beneath them. We also believe it to be an advantage of construction to place the common center of motionthe shaft Bofthe arm D and gum-holder E at one side of the pile of blanks and extend said arm and gum holder at difierent distances from said center of motion. This arrangement of parts, among other things, brings the gum-holder between the shaft B and the operative end of the arm, rendering the machine more compact.

What we claim as our invention is- 1. I11 a machine for guinming envelopes, a holder for the gum resting upon the blanks, in combination with seizers for carrying away the blanks, said holder being held to move bodily toward or from the edge of the blank, substantially as and for the purpose set forth.

2. In a machine for gumming envelopes, a holder for the gum formed with a dischargeopening in contact with the blanks, said opening having a movable side, in combination with a closer 0 for the movable side. and an adjustable rest or holder r for said closer for the movable side, substantially as shown and described.

In a machine for gumming envelopes, a holder for the gum held to move upward or downward and having an opening formed with a movable side, in combination with a closer for the movable side, also held to move upward or downward, the axes of motions of machine having a discharge-opening formed 1 with a movable side, the latter being provided with a lip u, in combination with a wedge to separate said part a and the body of said holder for the gum, as shown.

5. The gum-dish of an envelope-machin supported by a T-shaped piece or holder f, provided with retaining-screws to secure it to said gum-dish, and tilting-screws for adjusting the said gum-dish, as shown.

6. The combination, in a gumming device for an envelope-machine, of a dish to hold the gum, a holder for the dish formed with a stem, a sleeve to receive the stem, and a hollow bracket to receive the sleeve, substantially as set forth.

7. The combination, in amachine for gumming envelopes, of an arm carried bya rocking shaft and provided with a body or mass having, interstices to hold the gum, a weight to hold the blanks, and seizers to carry the blanks from under said weight, said arm being held to be adjusted upon said shaft, as set forth.

8. In a machine for gumming envelopes, a shaft, in combination with a gum-supplying arm held by the shaft, a bracket on the shaft, and a gum-dish held by the bracket, said gumsupplying arm and said dish having a common axis of motion, substantially as described.

9. In an envelope-gumming machine, a

shaft, in combination with a gum-supplying arm held by the shaft, a bracket on the shaft, and a gum-dish held by the bracket, said gumsupplying arm and gum-dish having the same axis of motion, and the dish being between the operative end of the arm and the shaft, substantially as shown.

EDWARD W. BLACKHALL. ROBERT ANDERSON. Witnesses to the signature of Edward W. Blackhall:

Enos B. WHITMORE, GEO. T. SMALLwooD. VVit-nesses to the signature of Robert Anderson:

J NO. DAVIDSON, E. W. BLACKHALL. 

